macosx: Replace standard video library view with new view supporting horizontal carousels

This PR rewrites the library's video view to properly support horizontal carousels (for now, in the form of horizontally-scrolling collection views) without compromising the normal library view.

This is done through the use of an outer table view, which contains collection views within the table cells.

Apologies for the big diffs!

Screen_Recording_2022-11-26_at_18.23.13

Signed-off-by: Claudio Cambra developer@claudiocambra.com